Tire-removing appliance



l. Al WEAVER AND J. STERNAMAN. TLHE REMOVING APPLIANCE.

' APPLICATION FILED IuLY I4. I9I9.

Patented J 11116 1, 1920.

2 SHEETS-SHEET l- @MEQ/@NW3 I. AIWEAVER AND l. STRNAMAN.

TIRE REMOVING APPLIANCE.

APPLICATION FILED IuLY I4. |919.

um n f and hinge the curved arm thereon at a point functional standpoints.

IRA. A. WEAVER AND JOHN STERNAMAN, 0F SPRINGFIELD, ILLINOIS, ASSIGNORS T0 WEAVER MANUFACTURING COMPANY, 0F SPRINGFIELD, ILLINOIS, A CORPO- RATION 0F ILLINOIS.

Specification of Letters Patent..

TIRE-REMOVING APPLIANCE.

Patented J une 1, 1920.

i 1919. Serial N0. 310,863.

TQ all 'whom it may concern:

Be it known that we, IRA A. WEAVER and JOHN STERNAMAN, both citizens of the United States, residing at Springfield, in the county of Sangamon and State of Illinois, have invented certain new and useful Improvementsr in Tire-Removing Appliances, described. and lclaimed in the following specification. v

The pneumatic tire-casings in common use not infrequently become adhered, rusted, or so-called frozen to their vehicle-wheel metal-rims andit is with some difficulty that the two are separated unless some special means are employed to break them apart. The present invention relates to simple and efficient means for breaking such undesirable unions and thereby assist in removing the tire-casing from the associated rim. To this end, the preferred embodiment ofthe invention comprises a suitable support or standard equipped with means for quickly centering and ixedly holding the rimv and casing, and a radial arm above the centered rim adapted to revolve about its axis, such y arm being adjustable as to height and carwith an inclined roller adapted to ride on the bottom orunder face of the casing and raise it free from the lange of thea rim during the revolution of the radial arm about the rims axis. More speciically, it is desirable to provide the radial arm with a sliding sleeve adjustable lengthwise thereon inwardly of the point of action of the roller on the casing, whereby such roller will eX- perience no tendency to undesirable outward displacement but will tend to continue its engagement with the casing atits inner portion, that is, adjacent to the rim.

Although the invention is susceptible of a variety of embodiments, it is unnecessary to fully describe and illustrate more than one in order to give a full understanding of the invention both from its structural and Accordingly, we have illustrated a preferred and desirable embodiment of the invention in the accompanying drawings forming a part of this specification and throughout the views of which like reference characters refer to the same parts.

In these drawings:

Figure 1 is a fragmentary central vertical sectlon through the appliance illustrating 1ts actlon on a pneumatic tire-casing; and

Fig. 2 1s a plan view of the structure Vshowlng the radial arm and the parts which 1t carriesin a different angular position.

Referrmg to these drawings, it will be readily understood that the appliance includes a hollow, upright standard or post 19. with a base 20, the standard at its top belng provided with a cap-piece 21.having three radiating rim-supporting arms 22, 23, 24, each Vprovided on its top face with a lengthwise undercut groove 25 accommodatlng a base-portion 26 of an upstanding sliding rim-clamping jaw 27, the three jaws being adapted to simultaneously expand and contract and designed to engage the inner surface of a vehicle-wheel rim, center it, and ixedly hold it. To this end each jaw base has a threaded aperture 28 receiving ATENT OFFICE.

Original application filed October 6, 1916, Serial No. 124,011. Divided and this application led July 14, y

trally-disposed, horizontal gear 32 having a cylindrical bearing 33 on the Vhub 34v of member 21 and a lat bearing at 35 onthe same part. One of these shafts is longer' than the others, its outer end portion having a bearing 36 and an operating-handle Thus, by turning such handle, the three r1m-centering and clamping jaws may be moved in or out in unison, as will be readily understood.

Hub 34 affords also a central bearing for an upright rotary and vertically-adjustable shaft 4() having its upper end 41 bent over horizontally, thus constituting a radial arm revoluble about the center or axis of the rim, held by the jaws. To adjust this shaft so that its horizontal portion 41 will be moved vertically to different heights, that is, toward and from the plane of the rim, a lever or handle 42 is fulcrulned at 43 on brackets 44, and projects through an aperture 45 into the interior of the standard or post where it is operatively connected to the lower end of the shaft. This connection is conveniently accomplished by making the inner end of the lever bifurcated or forked to straddle the shaft and equipping such `end with a pin 46 taking into a circular or Vscrew 51 having a suitable turning handle 52. To prevent injury to the arm and to hold the sleeve from turning, the former is ,desirably provided with -a longitudinal v groove 53 into Which the set-screw projects.

The upper outer -end portion of the sleeve has an ear 54 transversely apertured at 55 to form a, hinge bearing for the lateral shank 56 of a curved or goose-neck arm 57 shaped to extend around the rim andtire to the under-side of the latter. Such lower end of the bent or curved arm has an` inclined, beveled, anti-friction roller 58 rotatably mounted thereon, the face of the roller being adapted to engage and raise the tire casing from the lower flange of the rim, as is fully illustrated, thus assisting the removal of the casing from the rim. This conical roller frees thetire casing or shoe from the rim by a-lifting or upward displacing action ,during the revolution of the radial arm on which it is :mounted about the axis of the rim. As a means for preventing catching and tearing of the casing or the flap in' the split locking-ring groove of arm of this sort, such groove is temporarily provided with a filler or cover 59 of suitable shape. It will be noted that the pivot or hinge point of the gooseneck arm is inside 'the point of the engagement of the roller 58 with the tire-casing, and that the mounting of the roller is such that it is inclined with relation to the flat web of the rim. This construction tends to cause the roller to hug the face of the tirerim closely while forcing the casing upwardly, thus eliminating the possibility of damaging such part of the tire.

The operation of the Aappliance occurs practically as follows:

The rim and its casing are placed on the three radiating, supporting arms during the contracted condition of the jaws 27. Thereupon, by turning the handle 37, the jaws are simultaneously expanded, causin the centering and firm clamping of the rim in such position. The shield 59 having been put in place, the goose-neck arm and its roller having been brought to properv position, and the sleeve having beenadjusted lto the correct location on the radial arm and locked in place, the operator presses lever 42, thus elevating roller 58' by raising the various elements which carry it. Then whiley the parts are locked in this proper' height position by catch 48- entering one of the notches of the sector 49, the radial arm 41 is revolved about the axis of the centered rim. Such travel of roller 58 progressively lifts or raises the casing from the lower flange of the rim and owing to the disposition of the roller and its shape, and the form of the curved arm 57 and the location of its hinge mounting, the anti-friction roller tends to remain close to the rim and elevates the casing without injury to the latter. lAfter one complete revolutionl of arm 41,or even before, it may be further elevated at intervals and the rotation continued until the tire-casing is en-v tirely free from the rim or sufficiently so that it can be readily taken off.

The invention is not limited Iand restricted to the precise and exact structural details illustrated and described, because these may be modified within comparatively wide limits without departure from the substance of the invention and without'the sacrifice of any of its substantial benefits and advantages.

This application is a division of ourk earlier application forv tire changing machines, Serial No. 124,011, filed October 6,1916.

We claim:

l. In a tire remover, the combination of means to fixedly hold a 'vehicle-wheel-rim,

and a member mounted to rotate about the axis of the rim and engage the opposite side of the tire-casing adjacent to the rim to assist in freeing the tire-casing from the rim, substantially as described.

2. In a tire remover, the combination of means Vto vfixedly hold a vehicle-wheel rim,V a member mounted to rotate about the axis of the rim in a plane parallel to that of the rim and to engage the opposite side of the tire-casing adjacent to the rim to assist in freeing the casingy from the rim, and means to adjust said member toward and from the plane of the rim, substantially as described.

3. In a tire remover, the combination of v'means to fixedly hold a vehicle-wheel rim in substantially-horizontal position, and a member mounted to rotate about the axis of the rim and engage the under side of the tire-casing adjacent to the rim to assist in freeing the casing from the rim, substantially as described.

4. In a tire remover, the combination ofl means to ixedly hold a vehicle-wheel rim in substantially-horizontal position, a radial arm mounted to rotate about the axis of and above the rim, and a member carried by said arm shaped to extend around the tirecasing on the rim and adapted t0 engage its under face to assist in freeing the casing from the rim, substantially as described.

5. In a tire remover, the combination of means to xedly hold a vehicle-wheel rim in substantially-horizontal position, a radial arm mounted to rotate about the axis of and above the rim, means to adjust said radial arm toward and from the plane of the rim,

and a member carried by said arm shaped to extend around the tire-casing on the rim and adapted to engage its under face` to assist in freeing the casing from the rim, substantially as described.

6. In a tire remover, the combination of means to fixedly hold a vehicle-wheel-rim in substantially -horizontal position, a radial arm mounted to rotate about the axis of and above `the rim, means to adjust said radial arm toward and from the plane of the rim, a sleeve adjustable lengthwise on said arm and a member carried by said sleeve shaped to extend around the tire-casing on the rim and adapted to engage its under face to assist in freeing the casing from the rim, substantially as described.

7 In a tire remover, the combination of` means to xedly hold a vehicle-wheel rim in substantially-horizontal position, a radial arm mounted to rotate about the axis of and,y above the rim, means to adjust said radial arm toward and from the plane of the rim, a sleeve adjustable lengthwise on said arm, a member shaped to extend around the tirecasing on the rim hinged to said sleeve and adapted to engage the under side of the tire to assist in freeing the casing from the rim,

`substantially as described. 4

8. In a tire remover, the combination of a standard, a, plurality of jaws adapted to engage and fixedly hold a vehicle-wheel rim in substantially-horizontal position, means to simultaneously expand or contract said jaws, a radial arm mounted to rotate about the axis of and above the rim, means'to adjust said radial arm toward and :from the plane of the rim, a sleeve adjustable lengthwise on said arm, means to lock said sleeve in adjusted position on said arm,'a member hinged to said sleeve and shaped to extend aroundy theA tire-casing on the rim, and a.

roller"`on the lower end of said member adapted to engage the under face of the tirecasing to assist in freeing the same from the rim, substantially as described.

9. In a tire remover, the combination of means to hold a vehicle-wheel rim, a radial arm adapted to revolve about the axis of the rim, a goose-neck arm carried by said radial arm adapted to extend around the rim and its tire-casing, and a roller on said gooseneck arm adapted to engage the tire-casing on the side opposite said radial arm and to assist in freeing the casing from the rim, substantially as described.

. l0. In a tire remover, the combination of means to hold a vehicle-wheel rim, a radial arm adapted to revolve. about the axis of the rim, a goose-neck arm carried bysaid radial a-rm adapted to extend around the rim and its tire-casing,'and a roller o'n said gooseneck arm adapted to engage the tire-casing on 'the side opposite said radial arm and to y assist in freeing the tire-casing from the rim, the plane of said roller being inclined "f" to the plane of the described.

11. In a ,tire remover, the combination of means to hold a vehicle-wheelrim, a radial arm adapted to revolve about the axis of the rim', a goose-neck arm hinged to said radial arm and adapted to extend around the-rim andits tire-casing, and a roller on said goose-neck arm adapted to engage the tire-casing on the side. opposite the radial arm and to assist in freeing the tire-casing rim, substantially as nearer the axis of the' rim than the point of contact of the roller with thegtire-oasing,- substantially as described.

12. In a tire remover, the combination of means to hold a vehicle-wheel rim, a radial arm adapted to revolve about the axis of the rim, a goose-neck arm hinged to said IRA A. WEAVER. JOHN STERNAMAN,

lfrom the rim, the hinge'mounting of said goose-neck arm on said radial arm being ioo 

